Compare or Compair: Which Is Correct?

Updated 2026-10-12 · Which One Is Correct editorial team

Quick answer: When deciding between compare or compair, the correct choice is compare. Compair is a frequent misspelling that people often make due to its visual similarity. This guide clarifies the proper usage so you can communicate clearly and correctly in your writing and speech without making spelling errors.

The Short Answer

The word compare is correct, whereas compair is a misspelling. You should always use compare when discussing the act of examining similarities and differences.

People often confuse these two words because they sound alike and look similar at a quick glance. This error is common, but using the wrong form can make your writing look unprofessional or incorrect to careful readers.

Side-by-Side Comparison

Form	Status	Use it when
compare	Correct	You need to examine how things are alike or different
compair	Misspelling	Never use this form in formal or informal writing
verb	Part of Speech	It describes an action of looking at two things
standard	Region	Used in all English-speaking regions without exception

Correct Example Sentences

You should compare the prices before buying a new phone.
Scientists compare data from different experiments to find patterns.
Please compare the two resumes to see which candidate fits best.
Let us compare the colors of the dresses before you decide.
We can compare the results of the first week to the second.
It is useful to compare your goals with your current progress.
Don't forget to compare the ingredients on the food labels.
The teacher asked students to compare their stories in pairs.
You must compare the old map with the new one for accuracy.
We compare our daily expenses to last month to track savings.

Common Mistakes and Fixes

I will compair the costs of the two offers.: I will compare the costs of the two offers.
Please compair the features of the phones.: Please compare the features of the phones.
She likes to compair her old car with the new one.: She likes to compare her old car with the new one.
We compair the test scores to see who won.: We compare the test scores to see who won.
You should compair the recipes to check the ingredients.: You should compare the recipes to check the ingredients.
They compair the images to find the differences.: They compare the images to find the differences.

A Quick Test You Can Use

Ask yourself if the sentence describes finding similarities or differences between two items. If the answer is yes, use compare because it is the proper verb for this action. Always avoid the incorrect ending that turns the word into a misspelling.

Related Word Pairs

Affect vs Effect: Use affect as a verb and effect as a noun.
Compliment vs Complement: Compliment means to praise, while complement means to complete.
Discreet vs Discrete: Discreet relates to caution, while discrete means separate.
Its vs It's: Use its for possession and it's for the phrase it is.
Your vs You're: Use your for possession and you're for the phrase you are.

Frequently Asked Questions

Why do people spell it compair?

People often spell it compair because they expect the word to rhyme with repair or pair. This common mistake happens because the sound of the word suggests a similar ending, even though the spelling is incorrect.

Can I ever use compair in writing?

You should never use compair in any kind of writing, whether formal or informal. It is considered a spelling error and will make your message look unprofessional to readers who check their documents carefully.

Is compare a transitive or intransitive verb?

Compare can function as both a transitive and an intransitive verb depending on the sentence structure. It usually takes an object when you say what you are comparing, but it can stand alone in some contexts.

What is the past tense of compare?

The past tense of compare is compared, which adds an -ed ending to the base form. This follows the standard rule for regular verbs in English, making the conjugation straightforward for most speakers.